agency, or instrumentality for fiscal year 1989 is reduced by an amount equal to 15 percent of the amount expended by such department, agency, or instrumentality during fiscal year 1987 for purposes described under subsection (a). (d) As used in this section, the term "consulting services" includes any service within the definition of "Advisory and Assistance Services" in Office of Management and Budget Circular A-120, dated January 4, 1988. SEC. 348. Section 139 of the Highway Improvement Act of 1982 (23 U.S.C. 101 note) is amended by adding at the end thereof the following new subsection: "(c) Notwithstanding any other provision of this section or of any other provision of law, any project involving the relocation of any Interstate route or segment that is approved by the Secretary of Transportation under subsection (a) shall be eligible for discretionary funds made available under section 118(b)(2)(B) of title 23, United States Code.". SEC. 349. Not later than 90 days after the date of enactment of this Act, the Administrator of the Federal Aviation Administration shall institute a rulemaking proceeding to consider the need for changes to the existing regulation concerning the allocation and transfer of "slots" held by air carriers and commuter operators at each of the four airports covered by the final rule regarding Slot Allocation and Transfer Methods at High Density Traffic Airports, published in the Federal Register on December 20, 1985. Included among the issues that shall be considered in this proceeding are (1) the overall effect of the existing buy-sell regulation upon new entry or limited incumbents at these four airports, (2) the effects of the recently-approved mergers and acquisitions upon the operation of the buy/sell program at these airports, (3) the competitive and fare implications of the utilization of slots for providing services to and from hub airports and on monopoly routes, (4) the effect of short-term leases of slots upon the ability of new entrants or limited incumbents to purchase slots at these airports, (5) the effect of the use of air carrier slots by commuter operators upon entry by air carriers at these airports, and (6) the variation in prices paid for slots since adoption of the buy/sell program. The Administrator shall take final action in this proceeding, including the promulgation of any resulting final regulations, not later than 270 days after the date of enactment of this Act. SEC. 350. Notwithstanding any other provision of this Act, no funds appropriated to the Department of Transportation or the United States Coast Guard by this Act shall be used to carry out the closing of any search and rescue operation of the United States Coast Guard until after the expiration of the 90-day period following the date on which the Comptroller General of the United States reports to the Congress the results of his evaluation of the criteria used by the United States Coast Guard in determining whether or not to close out or curtail such operations, and his recommendations with respect thereto. SEC. 351. Notwithstanding sections 141(a) and 154 of title 23, United States Code, none of the funds in this or any previous or subsequent Act shall be used for the purpose of reducing or reserving any portion of a State's apportionment of Federal-aid highway funds as required by section 154(f) of title 23, United States Code, for reason of non-compliance with the criteria of that subsection during fiscal years 1986, 1987, and 1988. The Secretary shall promptly